Okay, Twisted Pair, I sent you a set of pictures via e-mail. I'm too dumb to figure out how to get them posted here.
An ITT 512 has card slots for up to 13 COs. Their shoebox (601) was good for 4 from the factory but I have had it support more with some "creative" wiring. Also dial intercoms. The WECO 551 series wasn't as flexible.
Any questions, let me know.
KLD
